North Korea Claims Hydrogen Bomb Test

Officials and analysts in South Korea cast doubt on Wednesday on the North’s claim that it had detonated a hydrogen bomb for the first time, saying seismological data from the impact was more in keeping with that of an atomic device.

Sticking it to its foes, North Korea on Wednesday celebrated what it called a successful hydrogen bomb test -- a milestone that, if true, marks a colossal advancement for the reclusive regime and a big test for leaders worldwide on what to do about it.